<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        var arr = [{ label: '男', value: 1 }, { label: '女', value: 0 }]

        function f(arr) {
            // 写代码，得到
            const obj = {}
            arr.forEach(item => {
                // item.value = item.value.toString()
                console.log(item.value);
                obj[item.value.toString()] = item.label
            })
            return obj
        }
        var obj = f(arr);
        console.log(obj)
        // obj2 = {'1': '男'， '0': '女'}
    </script>
</body>

</html>